Taylor Swift took the stage on "Saturday Night Live" to perform an original song for her opening monologue -- and the country cutie's personal life was fair game, including her split from Joe Jonas, the Kanye West incident, and her rumored romance with Taylor Lautner.

Swift, 19, proved she isn't afraid to call guys out for their dating faux pas -- even ex-beau Joe Jonas, 20. "You might think I'd bring up Joe, that guy who broke up with me on the phone...but I'm not going to mention him in my monologue," Taylor sings. "Hey Joe, I'm doing real well, tonight I'm hosting SNL."

Taylor also joked about rumors that she is dating "Twilight" hunk Taylor Lautner.

"If you're wondering if I might be dating the werewolf from 'Twilight' I'm not going to comment on that in my monologue," Swift sang, before mouthing "Hi Taylor," and blowing Lautner, 17, a kiss.

Check out photos of Lautner and the rest of the 'New Moon' cast on-set

Swift also commented on Kanye upstaging her acceptance speech at the 2009 MTV Video Music Awards, when he hijacked Taylor's mic and insisted that Beyoncé deserved the award instead.

See stars who defended Taylor Swift after the VMAs incident

"You might be expecting me to say, something bad about Kanye, and how he ran up onstage, and ruined my VMA monologue," Swift crooned as the audience cheered.

Swift also exercised her funny bone on the show by making fun of reality mom Kate Gosselin, and spoofing "Twilight" in a Frankenstein short.